van der rust



M. A. VAN DER RIJST March 3, 1964 SECTION BAR 2 Sheets-Sheet 1 Filed Dec. 1, 1959 March 3, 1964 VAN D RIJST 3,123,185

SECTION BAR 2 Sheets-Sheet 2 Filed Dec. 1, 1959 INVENTOR.

United States Patent 3,123,185 SECTION BAR Adrianus van der Rijst, Zwanenhurg, Nether- Matthijs Zwanenburg,

This invention relates to section bars of the type comprising a web and at least one flange normal to said web, the web and the flange being provided with perforations, the perforations in said web being arranged according to a pattern consisting of a repeated unit having the form of a square.

In known section bars of this type, the perforations in the web and in the flange are matched to each other only with respect to the longitudinal direction or extent of the bar and the possibilities of connecting such bars are limited.

According to the invention, it is desirable to increase the number of possibilities for connecting these section bars and to achieve this end, a section bar is so formed that the perforations in the flange include at least one row of apertures running parallel to the web and these apertures are arranged such that, when the webs of two section bars are so placed against each other so that their flanges are coplanar, the joint rows of apertures in the flanges form a pattern consisting of a unit that repeats itself and has the form of a square, the latter square being equal to the square in the perforation pattern of the web.

By the above construction, the result is achieved that, against two section bars having their webs placed against each other, a third section bar may be so mounted as to be normal to be said section bars, the web of said third bar being secured against the two coplanar flanges of the first-mentioned two section bars by the use of said apertures.

One feature of the invention is that the squares in the flange perforations may be shifted relative to the squares in the web perforations over a distance having the length of half the side of a square as will be shown in greater detail hereinafter.

For the purpose of connecting the webs of two profile bars of the invention at an angle with each other, these profile bars may be so formed that the web perforations are alternately arranged in the form of a square having at least one of its corners covered by an arcuate continuous slot having a corner for its center with the rest of the corners being covered by circular apertures, and in the form of a square having an aperture in its center, the flange perforations consisting of two parallel rows of apertures.

A preferred embodiment of the invention will next be explained in detail with reference to the accompanying drawings. In said drawings:

FIG. 1 is a perspective view of a section bar provided in accordance with the invention;

FIG. 2 is a perspective view of two section bars having their webs secured to each other, the flanges of these bars being coplanar;

FIGS. 3 and 4 are views, from the front and side respectively, of a connection of the web of a third section bar with two bars according to FIGURE 2;

FIGS. 5 and 6 are front and side views corresponding to those of FIGS. 3 and 4 with the third bar having its flange secured to the two other bars.

The section bar according to FIG. 1 comprises a web 1 and a flange 2 normal to said web. The perforations in the web 1 are arranged according to a pattern which repeats itself and which has the form of like squares ABCD, ABC' and so forth, which squares alternate with squares DCBA. In the first named squares, the perfora- 3,123,185 Patented Mar. 3, 1964 ice tions consist of two circular openings located on one diagonal and two arcuate slots B and D having points A and C respectively for their centers and defining an angle at of about 45.

In the center of each square DCBA', there is an oblong aperture E, E and so forth, the longitudinal axis of which is normal to the longitudinal direction of the bar and is, therefore, also normal to the flange 2.

The perforations in flange 2 include a row 3 of apertures F closest to and parallel to the web, said apertures F being identical to the apertures E and occupying the same position with respect to the connection or line 4 as the apertures E. There is also a second row 5 of elongated apertures G, which are directed along the longitudinal direction of the flange. The centers of the apertures F and G are regularly staggered relative to each other.

FIG. 2 shows two section bars according to the invention, the webs 1 and 1 of which bars have been secured to each other by means of bolts 6 and nuts 7 (see also FIGURES 4 and 6), the flanges 2 and 2' being coplanar.

As seen in FIGURES 3 and 4, the apertures F of the two bars are now arranged in rows 3 and 3, and form a pattern or unit in the form of a square, which is exactly identical to the squares ABCD and ABCD'.

However, the squares formed by the apertures F are shifted relative to the squares ABCD on the same bars by a distance equal to the length of half the side of a square due to the offset relationship of the associated apertures on each bar.

In FIG. 3, the arrow 8 shows the position and the length of a square ABCD, the length of arrow 9 being half the length of the arrow 8 and indicating the offset relationship of apertures F with respect both to apertures G and the squares on the associated web 1.

The advantage of the squares formed by the apertures F clearly appears from FIG. 3. The perforations in the web 1 can be made to register with said squares, so that by means of bolts 6 the third section bar may be secured at right angles to the two other section bars.

Inasmuch as the distance of the centers of two successive apertures G in the flange 2 is likewise equal to the side of a square (either squares ABCD or DCB'A' or the squares determined by the apertures F), a connection between a single and a double T-shaped section oar according to FIGURES 5 and 6 is also possible.

It will be clear that there are a great many other possibilities of connecting the bars. Thus, the arcuate slots BC and BC' render it possible to connect two section bars of the invention with their webs at an angle ranging between 45 and If the angles at the center of the slots are larger than 45, the connecting angies can likewise be larger.

What is claimed is:

1. A section bar comprising an elongated web and flange connected along a line, said web having a pattern of perforations consisting of repeated units each having perforations arranged at the corners of a square, the perforations of each square being constituted by at least one arcuate slot arranged at one of said corners and having another of said corners as its center, the flange being provided with a first row of perforations spaced from said line by a distance equal to about one half a side of said square, said flange perforations being staggered with respect to the perforations of said web.

2. A section bar as claimed in claim 1 wherein said flange is provided with a second row of perforations, said second row being parallel to said first row and both said rows being parallel to said line, the perforations of one row being elongated transversely of said line, the perforations of the other row being elongated parallel to said line.

3-. A section bar comprising a web and a flange extending perpendicularly from said Web, said Web and "fiange extending longitudinally, said web being provided :Wllh perforations which define corners of first and second squares Which repeat in the longitudinal direction, said first square being provided with arcuate slots at a first pair of diagonal corners and With circular perforations at the other pair of diagonal corners, said arcuate slots each having a center at a corresponding corner of the other pair of diagonal corners, said arcuate slots extending into said square, said second square being provided with an oblong aperture at the center thereof having a longitudinal axis extending perpendicular to the longitudinal extent of the bar, said flange being provided with two parallel rows of perforations, one of the rows of said flange perforations being closer to the web and consis ing of oblong apertures having longitudinal axes extending perpendicularly to the longitudinal extent of the bar, the other of said rows of flange perforations consisting of elongated apertures having longitudinal axes parallel to the longitudinal extent of said bar, the oblong apertures defining a repeating square with oblong apertures of another section bar with the Webs of the tWo section bars placed against each other and with the respective flanges coplanar, the elongated apertures being shifted relative to the oblong apertures by a distance equal to half the ide of the last said squares.

References Cited in the file of this patent UNITED STATES PATENTS 2,022,255 Scott Nov. 26, 1935 FOREIGN PATENTS 158,795 Sweden May 7, 1957 1,169,641 France Sept. 15, 1958 

1. A SECTION BAR COMPRISING AN ELONGATED WEB AND FLANGE CONNECTED ALONG A LINE, SAID WEB HAVING A PATTERN OF PERFORATIONS CONSISTING OF REPEATED UNITS EACH HAVING PERFORATIONS ARRANGED AT THE CORNERS OF A SQUARE, THE PERFORATIONS OF EACH SQUARE BEING CONSTITUTED BY AT LEAST ONE ARCUATE SLOT ARRANGED AT ONE OF SAID CORNERS AND HAVING ANOTHER OF SAID CORNERS AS ITS CENTER, THE FLANGE BEING PROVIDED WITH A FIRST ROW OF PERFORATIONS SPACED FROM SAID LINE BY A DISTANCE EQUAL TO ABOUT ONE HALF A SIDE OF SAID SQUARE, SAID FLANGE PERFORATIONS BEING STAGGERED WITH RESPECT TO THE PERFORATIONS OF SAID WEB. 